Refrigerating machine



Dec. 13, 1927. 1,652,966

L. F. WEGENER `mrnmfnwrmcf MACHINE Filed Aug. 10. 1925 2 Sheets-Sheet l ATTORNEY WITNESS:

f 7 j, f4 J J/z wzlsfwjerzer I i I INVENTOR Dec. 13, 1927. 1,652,966

L. F. WEGENER REFRIGERATING MACHINE 'FiledAulm 1925 2 sheets-sheet 2 Al IORNEY WITNESS:

4Patented Dec. 1-3, 1927.

UNITED Js'rA'rEis Louis r. WEGENER, or sin' Louis, Missoula.

nnrmenna'rmemacnmu.

Application led August 10, 1925.. Serial No. 49,463.

This invention relates to a refrigerating machine, and more particularly to means :for ihsuring the eficiency of the compressor, means for automatically draining the oil which is discharged w1th the gas from the high pressure chamber, and means for utilizing the oil for lubricating the plunger in the compression cylinder.. w

With the foregoing and other objects in view, the invention consists in the novel construction and arrangement of elements described, illustrated and claimed, it being understood that modiications may be made within the scope fof the claims without departing from the spirit ot' the invention.

In the drawings forming part of this application:

Figure 1 is a View .of ltical section.

Figure 2 is a section on line 2 2 of Figure 1.

the machine in ver- Figure 3 is a section on line l3 3 of Fig' ure 1. Y

The housing provides a low pressure chamber 12, and includes a head or the like comprising the horizontal portion 13, the

upwardly extending flange v14 surrounding A by the upper flange 15 thereof, includes ahorizontal fiange 16, a vertical body or flange 17 and an upper flange 18 supporting a cover 19. This construction provides a valve chamber 20 and within this. chamber is a valve casing 21 having an upper flange 22 resting upon annular rib 23 on body 17. An outlet duct is designated 23 and communicates with the interior of a chamber 25 formed in upper housing element 26, this chamber 25 constituting a high pressure chamber and having an outlet connection 2? leading to a condenser, not shown. Housing 26vhas alower flange 28 which is bolted to the horizontal portion of the head, the latter includin a .iange 13 through which bolts 29 pass, eing secured by nuts 30. An outlet connection for the high pressure chamber 25 is shown at 33. Y

Withinl upper chamber 12 which communicates with low pressure chamber 12, I provide a cylinder which has communication i through port 36 with said low pressurev chamber 1.2. A piston 37 operates in the cylinder, and gas omlow pressure cham` ber 12 passing through upper. chamber 12 and port 36 into the cylinder is compressed by the operation `of the piston or plunger and is forced out through a valved opening or port, the construction of the valves being of particular importance.

A disk valve is designated 40 and is pro'- vided with an aperture or apertures 41 through which the gas passes after being compressed. The gasiows thence -from valve casing 21 toand throughduc't ordischarge pipe 23 to high pressure -chamber 25. I

Disk valve 4Q is normally closed under the action of spring 42, and aperture or apertures 41 1n the disk valve are normally closed by valve 44 lacted Aupon by the fiat. spring l or resilient element 45 secured at 46 in the body of valve 40, The'sprin 42 is of greater strength than spring 45, an valve 40 therefore opens only 'under a'predetermined pres,- sure greater than the pressure required to open-the smaller valve.

The lubricating and oil sealing portion of the construction'constitutean important part of the invention and will now be described.

Oil passes into the high pressure chamber,-

25, incident to the operation of the refrigerating` machine, and passes thencezthrough outlet connection 33, pipe 50 to the connection 5l of housing 52. Chamber 53 communicates with a port54 closed `by a needle valvev55, and the stem of this valve carries collars -56 and 57 between which the ends t5)8. of levers 60 are positioned, these levers ally extending portion. The leversl arepivoted at 61, and their upper ends are pivotally' connected at 62 with ears formed on the of the form illustrated in Figure 1 `and includingan upper arm, a downwardly extending arm 'and an inwardly and laterlower portion of a hollow float 65. This float operates in chamber 660i housing 52,

and the iioat has a central stem 67 operating in' tubular portion 6 8 depending from the cover 69 of housing 52. An oil connection, comprising Ya tubular element 70 depends into the chamber formed within the hollow float 65, the upper part of thistubula-r inember having connection with an oil pi e 71 passing through the housing 1Q, throng low pressure chamber 12, and being fixed in the wall of cylinder 35 in the manner shown in Figure 1. The position of the discharge end 72 of this oil pipe, with reference to the ort 36 on the opposite side of the cylinder w is important.

Oil will drain from the high pressure chamber 25, will pass through pipe 50, chamber 53, port 54, into the main ychamber of housin 52, untilv the chamber is sufciently fi ed to'cause the oil to iiow overthe upper edge of the float '65 andzinto the chamber or reservoir, provided in the. oat.

s When the weight'of the oil-:within the iloat l v issuiiicie'nt, the latter will descend to a point 10,`

where the 'valve 55 will close port 54, cutf tingoi the inflow of iuid. v The suction'produced in the cylinder 35, inthe operation of l the machine, will'then result -in the iiow of 1liA I oil from the chamber Within the -ioat through tubularl member 70, pipe 71 and the discharge end 72-thereof into' the cylinder, for the purpose of establishing van oil. seal Y Y for the piston vand for .lubricating the latter.

' fingfbox is "design lbeing formed onhead 83. if.

A It should be added that the piston 37 hasV connection by means of pin 75 with connect- "ing rod 76 operated by the eccentric mech- -amsm-show'n in Figures land 3. Eccentric straps or bands 77 cooperate with eccentric 78 rigidl 'mounted on shaft 79, thelatter operating in'bearings v80 andk81 formed on the heads 82-and 83 having the "relation .to

housing l-illus'trated in'Figure 3, A stuf: ated l84., and' servesthe usual purpose, thls box or outer wall thereof Having thus described the invention, what 1. In 'a device -of the 'class described, a

y chamber .including a lower inlet-connection engaging means'on thestem, angular piv'ote'd and a -valve therefor, a stemrforthe valve,

E. first named, thru t Ydevices fulcrumed kon opposite sides of theI stem and having their shorter arms cooperating with the stem :for lifting the valve,`a

vertically movable open top receptacle withi iu the chamber, the longarms of the pivoted devices being pivotally connected 4with the receptacle .at points' diametrically opposite their pivotal points', means for guiding the receptacle 'in its vertical movement, and

means extending to a point of discharge, and leading from the receptacle for conducting Y fluid introduced thereto under .pressure thru the valve and thru the chamber,

2. In a' device of -the class "described, a pressure chamber having a lower outlet for the discharge -iuid, a second chamber in c'luding a lower inlet connection and a valve therefor, a stem for the valve, l en aging means on thestem, angular -pivoted evicesv fulcrumed on opposite sides of the. stem and havingtheir shorter arls cooperating with Athe stem fo'r lifting thevalve, a vertically.

movable open top receptacle within the vsecond chamber,- the longer arms of the pivoted ,devices being'pivotallyiconnected with the receptacle. at points diametrically opposite their pivotal points, means for guiding the rece tacle .in `its movement, and means extending to a point of discharge from the re. I" ceptacle,

Louisr. WEGENER-- 

